Quite Often
![kochiya sanae and tatara kogasa (touhou) drawn by mizuki_hitoshi](https://cdn.donmai.us/original/33/53/33539b96f1b46d93b9d461ba7315e1ca.jpg)
Artist's commentary
Hang in There, Kogasa-san 3867
So, if that system's IC s broken, you're stuck, since there's no way to obtain them as an individual. Or you could buy a junker of the same model from somewhere and replace the IC, but that'd be the only way.
I wrote that "several of the wires have broken," but that's because I got carried away at the start and cut several of them, so it was a total self-own. :-)